AT+CPSMS=1,,,"10101100","00100010"
OK
AT+CPSMS?
+CPSMS: 1,,,"10101100","00100010"
OK
It means that module requires to adopt the PSM for reducing its power
consumption. If the network supports PSM and accepts that the UE uses
PSM with requested timers value, module enters in PSM when the active
timer expires (T3324=2 minutes) and stay in this mode for ten minutes
(T3412=12 minutes).
AT+CPSMS=0
OK
It means that PSM is set to disable, the module does not go to Power Saving
Mode in any case.